JP3773025B2 - Axle bearing device - Google Patents

Axle bearing device Download PDF

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Publication number
JP3773025B2
JP3773025B2 JP2000157815A JP2000157815A JP3773025B2 JP 3773025 B2 JP3773025 B2 JP 3773025B2 JP 2000157815 A JP2000157815 A JP 2000157815A JP 2000157815 A JP2000157815 A JP 2000157815A JP 3773025 B2 JP3773025 B2 JP 3773025B2
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Japan
Prior art keywords
radial flange
disk rotor
bolt hole
bolt
ring member
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Expired - Fee Related
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JP2000157815A
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Japanese (ja)
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JP2001334803A (en
Inventor
輝行 川谷
功一 清水
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JTEKT Corp
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JTEKT Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車に使用される車軸用軸受装置に関する。
【０００２】
【従来の技術】
従来、例えば、図３（特開平７−１６４８０９号公報記載の構成）のような車軸用軸受装置が知られている。すなわち、図示しない車体に取付けられる外輪部材３０と、ディスクブレーキ装置のディスクロータ３７が取付けられる内輪部材３１と、内外輪部材３１，３０間に保持器３３，３４に保持されて介装された転動体３２とを備えている。回転部材とされる側の上記内輪部材３１の外周一端部には環状の半径方向フランジ３５が設けられ、この半径方向フランジ３５には円周等間隔かつ半径方向同一位置に複数の軸方向に貫通するボルト穴３６が形成され、このボルト穴３６にボルト３９が挿通されている。ボルト３９の首下部３９ａにはセレーション４０が形成されて上記ボルト穴３６の内周面に食い込み、これによりボルト３９はボルト穴３６に圧入固定の状態とされている。また、半径方向フランジ３５から突出したボルト３９の足部３９ｂに、ディスクロータ３７とホイール部材３８が嵌合され、上記ボルト３９の足部３９ｂに形成された螺子部３９ｃにナット４１を螺合させてデイスクロータ３７とホイール部材３８とを固定する。この時、ディスクロータ３７は上記半径方向フランジ３５の側面４３に圧接固定される。
【０００３】
【発明が解決しようとする課題】
上記の車軸用軸受装置においては、ボルト３９がボルト穴３６に圧入固定されているため、半径方向フランジ３５のディスクロータ３７を取付ける側の側面４３のボルト穴３６回りがうねりやすく、そのためこのフランジ側面４３の面振れ精度に影響が出やすい。もし、半径方向フランジ側面４３の面振れ精度が低下した場合、ディスクロータ３７やホイール部材３８の性能に悪影響が及ぼされる。従って、上記図３の従来軸受装置ではこの半径方向フランジ３５のボルト穴３６回りに溝４２を形成してうねりを溝４２内部にとどめることにより、半径方向フランジ３５のディスクロータ取付側面４３への悪影響を防止し、この側面４３の面振れ精度を維持するようにされている。しかしながら、上記溝４２の深さや大きさ等は設計上の諸条件から決定されているが、溝４２形状によってはボルト３９圧入固定時の影響が上記側面４３に作用しこの側面４３にうねりが生じる恐れがある。
【０００４】
この場合、半径方向フランジ３５の側面４３を研磨処理または旋削処理にて加工し面振れ精度を向上させることが行われる。しかし、この加工は半径方向フランジ３５にボルト３９圧入固定した状態で行われるため、溝より外径側部分４３ａしかできない。従って、半径方向フランジ３５の側面４３の外径側部分４３ａは面振れ精度が向上するが、内径側部分４３ｂは未加工状態であるため面振れ精度は低下したままとなる。その結果、ディスクロータ３７およびホイール部材３８を半径方向フランジ３５の側面４３に取付けた際、面振れ精度が悪いボルト穴３６を含む内径側部分４３ｂに影響されて、ディスクロータ３７およびホイール部材３８の性能低下につながることが考えられる。
【０００５】
本発明は、上記の課題に対処するためになされたものであり、半径方向フランジのボルト穴より外径側部分の面振れ精度の向上だけでディスクロータおよびホイール部材の性能維持が可能な車軸用軸受装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記課題を解決する手段として、内輪部材と、外輪部材と、内外輪部材間に保持器に保持されて介装された転動体と、回転部材とされる側の上記内輪部材または外輪部材に形成されディスクブレーキ装置のディスクロータが側面に装着される半径方向フランジとを有する車軸用軸受装置において、上記半径方向フランジにホイール装着用ボルトが圧入固定される軸方向のボルト穴を円周複数個形成するとともに、上記ディスクロータを装着する半径方向フランジ側面の上記ボルト穴より外径側部分のみをボルト穴を含む内径側部分よりディスクロータ側に突出した状態の研磨面または旋削面に形成し、上記外側部分にディスクロータを当接させたことを特徴とする。
【０００７】
【発明の実施の形態】
以下、この発明の具体的実施形態について図１及び図２を参照して説明する。図示しない車体に取付けられる外輪部材１と、ディスクブレーキ装置のディスクロータ８が取付けられる内輪部材２と、内外輪部材２，１間に保持器４，５に保持されて介装された転動体３と、外輪部材１の両端部に配置されて軸受内部を密封する密封部材１５を備えている。
【０００８】
そして、回転部材とされる側の上記内輪部材の外周一端部には環状の半径方向フランジ６が設けられ、この半径方向フランジ６には円周等間隔かつ半径方向同一位置に複数の軸方向に貫通するボルト穴７が形成され、このボルト穴７にボルト１０が挿通されている。そして、ボルト穴７の周囲は溝１４が形成されている。この溝１４の形状、作用は図３の従来構造の説明と同様である。ボルト１０の首下部１０ａにはセレーション１１が形成されて上記ボルト穴７の内周面に食い込み、これによりボルト１０はボルト穴７に圧入固定の状態とされている。また、半径方向フランジ６から突出したボルト１０の足部１０ｂに、ディスクロータ８とホイール部材９が嵌合され、上記ボルト１０の足部１０ｂに形成された螺子部１０ｃにナット１２を螺合させてディスクロータ８とホイール部材９とを固定する。この時、ディスクロータ８は上記半径方向フランジ６の側面１３に圧接固定される。
【０００９】
また、ディスクロータ８を取付ける側の半径方向フランジ６の側面１３は、図２に示されるように、ボルト穴７より外径側の部分１３ａはボルト穴７位置の部分を含む内径側の部分１３ｂに比べ、ディスクロータ８側に僅かに突出ｈ１した段付き形状とされている。
【００１０】
そして、上記半径方向フランジ６のディスクロータ取付側の側面１３において、そのボルト穴７より外径側部分１３ａは、ボルト１０の圧入固定状態で研磨加工または旋削加工にて削られ、面振れ精度が向上させられている。なお、この側面１３は、上記加工が完了した時点でも、ボルト穴７より外径側部分１３ａはボルト穴位置の部分を含む内径側部分１３ｂに比べ、ディスクロータ８側に僅かに突出ｈ２した段付き形状とされている。これにより、ディスクロータ８は、ボルト穴７より外径側部分１３ａでのみ当接させられ、上記加工がされていないボルト穴７位置部分を含む内径側部分１３ｂには軽微な接触または非接触となり、ディスクロータ８は上記外径側部分１３ａの面振れ精度に倣うことになる。
【００１１】
なお、本発明の実施形態では、車軸外周面中央部に内輪軌道が形成され、その内側に円筒状段部が形成された車軸と、該車軸の内側円筒状段部に嵌合する内輪と外周面に車体固定用フランジ部を形成した外輪からなる車軸用軸受装置を記載したが、これに限定されるものではない。
例えば、外周面が円筒状の段部から構成される車軸とその外周面に嵌合する複数個の内輪と外周面に車体固定用フランジ部を形成した外輪とからなる車軸用軸受装置や、軸に嵌合固定される複数個の内輪と、外周面にホイール装着用のフランジ部を形成した外輪とからなる車軸用軸受装置や、ホイールが取り付けられる側にある部分が円筒状で、中央段部に内輪軌道が形成された等速ジョイントの外輪部材と、該円筒状部分の外周面と嵌合する外周面中央部に内輪軌道が形成された車軸と、外周面に車体固定用フランジ部を形成した外輪からなる車軸用軸受装置等にも適用できるものである。
【００１２】
【発明の効果】
本発明は、車軸用軸受装置において、ディスクロータ及びホイール部材を取付けるために回転側部材に設けられた半径方向フランジにホイール装着用ボルトが圧入固定される軸方向のボルト穴を円周複数個形成するとともに、上記ディスクロータを装着する半径方向フランジ側面の上記ボルト穴より外径側部分のみをボルト穴を含む内径側部分よりディスクロータ側に突出した状態の研磨面または旋削面に形成し、上記外側部分にディスクロータを当接させた構成としている。このため、半径方向フランジのボルト穴より外径側部分にディスクロータを沿わせて固定することができるため、上記外径側部分の面振れ精度の向上だけでディスクロータおよびホイール部材の性能維持が可能となる。
【図面の簡単な説明】
【図１】本発明の一実施形態の車軸用軸受装置の断面図である。
【図２】図１の要部拡大図である。
【図３】従来の車軸用軸受装置の断面図である。
【符号の説明】
１ 外輪部材
２ 内輪部材
３ 転動体
４ 保持器
５ 保持器
６ 半径方向フランジ
７ ボルト穴
８ ディスクロータ
９ ホイール部材
１０ ボルト
１３ 側面
１３ａ 側面の外径側部分
１３ｂ 側面のボルト穴位置部分を含む内径側部分[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an axle bearing device used in an automobile.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, an axle bearing device as shown in FIG. 3 (a configuration described in JP-A-7-164809) is known. That is, the outer ring member 30 attached to the vehicle body (not shown), the inner ring member 31 to which the disc rotor 37 of the disc brake device is attached, and the rollers 33 and 34 interposed between the inner and outer ring members 31 and 30 are interposed. And a moving body 32. An annular radial flange 35 is provided at one end of the outer periphery of the inner ring member 31 on the rotating member side, and the radial flange 35 penetrates in a plurality of axial directions at equal intervals in the circumference and at the same position in the radial direction. A bolt hole 36 is formed, and a bolt 39 is inserted into the bolt hole 36. A serration 40 is formed in the lower neck portion 39 a of the bolt 39 and bites into the inner peripheral surface of the bolt hole 36, whereby the bolt 39 is press-fitted and fixed to the bolt hole 36. Further, the disc rotor 37 and the wheel member 38 are fitted to the foot portion 39b of the bolt 39 protruding from the radial flange 35, and the nut 41 is screwed to the screw portion 39c formed on the foot portion 39b of the bolt 39. Then, the disk rotor 37 and the wheel member 38 are fixed. At this time, the disk rotor 37 is pressed and fixed to the side surface 43 of the radial flange 35.
[0003]
[Problems to be solved by the invention]
In the above axle bearing device, since the bolt 39 is press-fitted and fixed in the bolt hole 36, the periphery of the bolt hole 36 on the side surface 43 on the side where the disk rotor 37 of the radial flange 35 is attached tends to swell. 43 is likely to affect the surface runout accuracy. If the surface runout accuracy of the radial flange side surface 43 decreases, the performance of the disk rotor 37 and the wheel member 38 is adversely affected. Therefore, in the conventional bearing device shown in FIG. 3, the groove 42 is formed around the bolt hole 36 of the radial flange 35 to keep the undulation inside the groove 42, thereby adversely affecting the disk rotor mounting side surface 43 of the radial flange 35. And the surface runout accuracy of the side surface 43 is maintained. However, the depth, size, etc. of the groove 42 are determined from various design conditions. However, depending on the shape of the groove 42, the influence of the bolt 39 when press-fitting is applied to the side surface 43, and the side surface 43 is swelled. There is a fear.
[0004]
In this case, the side surface 43 of the radial flange 35 is processed by a polishing process or a turning process to improve surface runout accuracy. However, since this processing is performed in a state where the bolt 39 is press-fitted and fixed to the radial flange 35, only the outer diameter side portion 43a can be formed from the groove. Therefore, the outer diameter side portion 43a of the side surface 43 of the radial flange 35 has improved surface runout accuracy, but the inner diameter side portion 43b is in an unprocessed state, and the surface runout accuracy remains lowered. As a result, when the disk rotor 37 and the wheel member 38 are attached to the side surface 43 of the radial flange 35, the disk rotor 37 and the wheel member 38 are affected by the inner diameter side portion 43b including the bolt hole 36 having poor surface runout accuracy. This can lead to performance degradation.
[0005]
The present invention has been made to cope with the above-described problems, and is for an axle capable of maintaining the performance of the disk rotor and the wheel member only by improving the surface runout accuracy of the outer diameter side portion from the bolt hole of the radial flange. An object is to provide a bearing device.
[0006]
[Means for Solving the Problems]
As means for solving the above problems, an inner ring member, an outer ring member, a rolling element interposed between the inner and outer ring members and held by a cage, and the inner ring member or the outer ring member on the side to be a rotating member are formed. In a bearing apparatus for an axle having a radial flange on which a disk rotor of a disk brake device is mounted on a side surface, a plurality of axial bolt holes are formed around the radial flange, in which wheel mounting bolts are press-fitted and fixed. to together, form the polishing surface or turned surface of the state of protruding only from the disc rotor side inner diameter side portion including a bolt hole radially outer portion than the bolt holes in the radial flange side for mounting the disk rotor, the The disk rotor is brought into contact with the outer portion .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A specific embodiment of the present invention will be described below with reference to FIGS. An outer ring member 1 attached to a vehicle body (not shown), an inner ring member 2 to which a disc rotor 8 of a disc brake device is attached, and a rolling element 3 interposed between the inner and outer ring members 2 and 1 and held by cages 4 and 5. And a sealing member 15 disposed at both ends of the outer ring member 1 for sealing the inside of the bearing.
[0008]
An annular radial flange 6 is provided at one end of the outer periphery of the inner ring member on the side to be the rotating member, and the radial flange 6 has a plurality of axial directions at equal intervals in the circumference and at the same position in the radial direction. A penetrating bolt hole 7 is formed, and a bolt 10 is inserted into the bolt hole 7. A groove 14 is formed around the bolt hole 7. The shape and action of the groove 14 are the same as those of the conventional structure shown in FIG. A serration 11 is formed in the lower neck portion 10 a of the bolt 10 and bites into the inner peripheral surface of the bolt hole 7, whereby the bolt 10 is press-fitted and fixed in the bolt hole 7. Further, the disc rotor 8 and the wheel member 9 are fitted to the foot portion 10b of the bolt 10 protruding from the radial flange 6, and the nut 12 is screwed to the screw portion 10c formed on the foot portion 10b of the bolt 10. Then, the disk rotor 8 and the wheel member 9 are fixed. At this time, the disk rotor 8 is pressed and fixed to the side surface 13 of the radial flange 6.
[0009]
Further, as shown in FIG. 2, the side surface 13 of the radial flange 6 on the side where the disk rotor 8 is to be attached has a portion 13 a on the outer diameter side from the bolt hole 7 and a portion 13 b on the inner diameter side including a portion at the position of the bolt hole 7. Compared to the above, a stepped shape slightly projecting h1 toward the disk rotor 8 side is formed.
[0010]
Then, on the side surface 13 on the disk rotor mounting side of the radial flange 6, the outer diameter side portion 13 a from the bolt hole 7 is ground by grinding or turning while the bolt 10 is press-fitted and fixed, and the surface runout accuracy is improved. It has been improved. Incidentally, the side surface 13, even when the above processing is completed, the outer diameter side portion 13a from the bolt hole 7 base ratio on the inner diameter side portion 13b that includes a portion of the bolt hole position, slightly protruding de Isukurota 8 side h2 It has a stepped shape. Thus, the disk rotor 8 is brought in contact only with the outer diameter side portion 13a from the bolt holes 7, slight contact or non-contact with the inner diameter side portion 13b that includes a bolt hole 7 located portion that is not the processing Thus, the disk rotor 8 follows the surface runout accuracy of the outer diameter side portion 13a.
[0011]
In the embodiment of the present invention, the inner ring raceway is formed in the center part of the outer peripheral surface of the axle and the cylindrical step part is formed on the inner side thereof, and the inner ring and the outer periphery are fitted to the inner cylindrical step part of the axle. Although the axle bearing device including the outer ring having the body fixing flange portion formed on the surface is described, the invention is not limited to this.
For example, an axle bearing device comprising an axle having an outer peripheral surface formed of a cylindrical step portion, a plurality of inner rings fitted to the outer peripheral surface, and an outer ring having a body fixing flange portion formed on the outer peripheral surface; Axle bearing device consisting of a plurality of inner rings fitted and fixed to the outer ring and an outer ring having a wheel mounting flange formed on the outer peripheral surface, or a portion on the side where the wheel is mounted is cylindrical, and the center step An outer ring member of a constant velocity joint having an inner ring raceway formed thereon, an axle having an inner ring raceway formed in a central portion of the outer peripheral surface to be fitted to the outer peripheral surface of the cylindrical portion, and a body fixing flange portion on the outer peripheral surface The present invention can also be applied to an axle bearing device or the like comprising an outer ring.
[0012]
【The invention's effect】
The present invention relates to an axle bearing device in which a plurality of circumferential bolt holes are formed in which a wheel mounting bolt is press-fitted and fixed to a radial flange provided on a rotating side member for mounting a disk rotor and a wheel member. to together, form the polishing surface or turned surface of the state of protruding only from the disc rotor side inner diameter side portion including a bolt hole radially outer portion than the bolt holes in the radial flange side for mounting the disk rotor, the The disk rotor is in contact with the outer portion . For this reason, since the disk rotor can be fixed along the outer diameter side portion from the bolt hole of the radial flange, the performance of the disk rotor and the wheel member can be maintained only by improving the surface runout accuracy of the outer diameter side portion. It becomes possible.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an axle bearing device according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a main part of FIG.
FIG. 3 is a cross-sectional view of a conventional axle bearing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer ring member 2 Inner ring member 3 Rolling element 4 Cage 5 Cage 6 Radial flange 7 Bolt hole 8 Disc rotor 9 Wheel member 10 Bolt 13 Side surface 13a Side diameter outer diameter side portion 13b Side face bolt hole position portion portion

Claims (2)

内輪部材と、外輪部材と、内外輪部材間に保持器に保持されて介装された転動体と、回転部材とされる側の上記内輪部材または外輪部材に形成されディスクブレーキ装置のディスクロータが側面に装着される半径方向フランジとを有する車軸用軸受装置において、上記半径方向フランジにホイール装着用ボルトが圧入固定される軸方向のボルト穴を円周複数個形成するとともに、上記ディスクロータを装着する半径方向フランジ側面の上記ボルト穴より外径側部分のみをボルト穴を含む内径側部分よりディスクロータ側に突出した状態の研磨面または旋削面に形成し、上記外側部分にディスクロータを当接させたことを特徴とする車軸用軸受装置。An inner ring member, an outer ring member, a rolling element held by a cage between the inner and outer ring members, and a disc rotor of a disc brake device formed on the inner ring member or the outer ring member on the side to be a rotating member. In an axle bearing device having a radial flange mounted on a side surface, a plurality of axial bolt holes, in which a wheel mounting bolt is press-fitted and fixed, are formed in the radial flange, and the disk rotor is mounted. Only the part on the outer diameter side of the bolt hole on the side surface of the radial flange to be formed is formed on the polished or turned surface protruding from the inner diameter side part including the bolt hole to the disk rotor side, and the disk rotor is brought into contact with the outer part. An axle bearing device characterized by being made. 内輪と、内輪の内周面に嵌合される軸部材と、外輪部材と、内輪と外輪部材間で保持器に保持されて介装された転動体と、回転部材とされる側の上記軸部材または外輪部材に形成されディスクブレーキ装置のディスクロータが側面に装着される半径方向フランジとを有する車軸用軸受装置において、上記半径方向フランジにホイール装着用ボルトが圧入固定される軸方向のボルト穴を円周複数個形成するとともに、上記ディスクロータを装着する半径方向フランジ側面の上記ボルト穴より外径側部分のみをボルト穴を含む内径側部分よりディスクロータ側に突出した状態の研磨面または旋削面に形成し、上記外側部分にディスクロータを当接させたことを特徴とする車軸用軸受装置。The inner ring, a shaft member fitted to the inner peripheral surface of the inner ring, an outer ring member, a rolling element interposed between the inner ring and the outer ring member and held by a cage, and the shaft on the side to be a rotating member An axle bearing device having a radial flange formed on a member or an outer ring member and mounted on a side surface of a disc rotor of a disc brake device, wherein an axial bolt hole into which a wheel mounting bolt is press-fitted and fixed to the radial flange A polishing surface or a turning in a state where only a part on the outer diameter side of the bolt hole on the side surface of the radial flange on which the disk rotor is mounted protrudes from the inner diameter side part including the bolt hole to the disk rotor side. An axle bearing device formed on a surface and having a disk rotor in contact with the outer portion .
JP2000157815A 2000-05-29 2000-05-29 Axle bearing device Expired - Fee Related JP3773025B2 (en)

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WO2003072974A1 (en) * 2002-02-28 2003-09-04 Nsk Ltd. Bearing unit for wheels
JP2005256847A (en) * 2002-02-28 2005-09-22 Nsk Ltd Bearing unit for wheel
JP4484104B2 (en) * 2004-08-16 2010-06-16 Ｎｔｎ株式会社 Wheel bearing device
JP6107205B2 (en) 2013-02-15 2017-04-05 株式会社ジェイテクト Hub wheel manufacturing method and vehicle bearing device manufacturing method
JP7487640B2 (en) 2020-10-29 2024-05-21 日本精工株式会社 Hub unit bearing
JP7487642B2 (en) 2020-11-04 2024-05-21 日本精工株式会社 Hub unit bearing

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